: macOS Big Sur (11.0) or Monterey (12.0) was typically required for this specific version, though later updates shifted requirements to macOS 13.5 and above.
Before diving into the specifics of the 3.6.6 update, let us establish the basics. MainStage 3 is Apple’s dedicated live performance application. Unlike Logic Pro, which is built for timeline-based editing and mixing, MainStage is designed for low-latency playback, patch switching, and hardware controller integration. MainStage-3.6.6.dmg - allmacworld